Urinary occult blood is just a title which means latent bleeding in urine
tested out by routine urine test. During routine urine test, there is an item of
Red Blood Cells. If the number of Red Blood Cells increases, even tiny number
can be called urinary occult blood.
Urinary occult blood test showing positive result can only means that there
are Red Blood Cells in urine. These Red Blood Cells are not real complete Red
Blood Cells with form through microscopic. Instead, these are composition of Red
Blood Cell tested out by computer. Normally, Red Blood Cells of body are broken
down continuously and their compositions are excreted out of body with urine.
Therefore, even healthy person may get a positive result in a test. Generally,
through high magnification, 0 to 1 Red Blood Cell is normal. When Red Blood
Cells are more than 3/Hp under microscope, it can be diagnosed as
Haematuria.
Urinary occult blood and Haematuria: positive urinary occult blood result
just means Red Blood Cell in urine tested out by examination, but not gross
Haematuria. Haematuria can be divided into gross Haematuria, total Haematuria
and positive urinary occult blood.
Normally, urinary occult blood is caused the following three reasons:
inflammation, stones and tumor. As for inflammation, besides Haematuria,
patients suffering from Glomerulonephritis, nephropyelitis and cystitis and so
on can also be tested out urinary occult blood through urine test. As for
stones, no matter what place stone stay, kidney, ureter or urinary bladder,
urinary occult blood may happen. Other conditions like menstrual period or
constipation can also cause urinary occult blood. The last one, tumor, like
benign or malignant tumor of kidney, urinary bladder or ureter, can cause
urinary occult blood.
